unhandled throw() now reports as error. Fixes #446

src/main/java/carpet/script/Expression.java

@@ -19,6 +19,7 @@ import carpet.script.exception.ExpressionException;
 import carpet.script.exception.InternalExpressionException;
 import carpet.script.exception.ResolvedException;
 import carpet.script.exception.ReturnStatement;
+import carpet.script.exception.ThrowStatement;
 import carpet.script.language.Arithmetic;
 import carpet.script.language.ControlFlow;
 import carpet.script.language.DataStructures;
@@ -602,9 +603,9 @@ public class Expression
         {
             return exprProvider.get().evalValue(c, expectedType);
         }
-        catch (ContinueStatement | BreakStatement | ReturnStatement exc)
+        catch (ContinueStatement | BreakStatement | ReturnStatement | ThrowStatement exc)
         {
-            throw new ExpressionException(c, this, "Control flow functions, like continue, break, or return, should only be used in loops and functions respectively.");
+            throw new ExpressionException(c, this, "Control flow functions, like continue, break, throw or return, should only be used in loops, try blocks, and functions respectively.");
         }
         catch (ExitStatement exit)
         {

src/main/java/carpet/script/value/FunctionValue.java

@@ -122,7 +122,7 @@ public class FunctionValue extends Value implements Fluff.ILazyFunction
     @Override
     public double readDoubleNumber()
     {
-        throw new InternalExpressionException("Function value has no numeric value");
+        return getNumParams();
     }
 
     @Override